Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
In Grand Isle Station, the average high-temperature in September gently drops from a moderately hot 75.9°F (24.4°C) in August to an agreeable 68.9°F (20.5°C). Grand Isle Station's nighttime temperature in September drops to an average of 50.7°F (10.4°C).Humidity
The average relative humidity in September in Grand Isle Station, Vermont, is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 1.81" (46mm) of precipitation.Snowfall
In Grand Isle Station, snow does not fall in June through September.Daylight
In September, the average length of the day in Grand Isle Station is 12h and 31min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:29 pm. On the last day of September, in Grand Isle Station, sunrise is at 6:50 am and sunset at 6:35 pm EDT.
Sunshine
In September, the average sunshine in Grand Isle Station is 9.1h.UV index
In Grand Isle Station, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Grand Isle Station?
What is the average humidity in September in Grand Isle Station?
What is the driest month in Grand Isle Station?
How much does it rain in Grand Isle Station in September?
When it does not snow in Grand Isle Station?
Does it snow in Grand Isle Station in September?
How many hours of daylight does Grand Isle Station have in September?
When are sunrise and sunset in September in Grand Isle Station?
How long on average sun shines in September in Grand Isle Station?
What is the UV index reading in September in Grand Isle Station?
Average temperature in September
Grand Isle Station, VT
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in September: 50.7°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (12°F).
Average pressure in September
Grand Isle Station, VT
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Grand Isle Station, VT
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is April (8mph).
The calmest months (with the lowest average wind speed) are July and August (6.1mph).
Average humidity in September
Grand Isle Station, VT
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in September
Grand Isle Station, VT
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is June (3.23").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in September
Grand Isle Station, VT
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in September
Grand Isle Station, VT
- Average snowfall in September: 0"
The month with the highest snowfall is February (9.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Grand Isle Station, VT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grand Isle Station, VT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).
Average sunshine days in September
Grand Isle Station, VT
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (6.5 days).
Average UV index in September
Grand Isle Station, VT
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Grand Isle Station, VT
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Grand Isle Station, VT
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (4mi).
Grand Isle Station, Vermont, USA
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